/**
 * Copyright (C) 2010 D. Zoller, M. Richter, M. Blumenstein & W. Biller
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.googlecode.siafu.rest.commands.parser;

import java.util.LinkedList;
import java.util.List;

import com.googlecode.siafu.rest.model.Trackable;


/**
 * @author D. Zoller
 * @version $Id: FindNearbyTrackableParser.java,v 1.5 2010-06-14 07:57:55 nosebrain Exp $
 * @param <T> the trackable to parse
 */
public abstract class FindNearbyTrackableParser<T extends Trackable> extends DefaultSiafuResultParser<List<T>> {
	
	private static final String NEARBY_TRACKABLE_SPLIT = " ";

	@Override
	public List<T> parse(String string) {
		final LinkedList<T> trackables = new LinkedList<T>();
		
		if (string != null && (!(string.endsWith(this.getErrorMessage())))) {
			super.parse(string);
			
			if (!string.trim().isEmpty()) {
				final String[] trackableNames = string.split(NEARBY_TRACKABLE_SPLIT);
				
				for (final String trackableName : trackableNames) {
					final T agent = this.createNewTrackable();
					agent.setName(trackableName);
					trackables.add(agent);
				}
			}
		}		
		
		return trackables;
	}
	
	protected abstract T createNewTrackable();
	
	protected abstract String getErrorMessage();
}
